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e., non-SMA and SMA) also failed to show a relationship between age and bicyclo-PGE2/creatinine in plasma and urine in the non-SMA (r = ?0.075, http://www.selleck.cn/products/lee011.html P = 0.653 and r = ?0.058, P = 0.798, respectively) and SMA (r = ?0.002, P = 0.989 and r = 0.094, P = 0.687, respectively) groups. To explore the relationship between PGE2 and erythropoiesis, bicyclo-PGE2/creatinine levels were compared between individuals with insufficient erythropoiesis (RPI http://www.selleckchem.com/products/i-bet-762.html decrease in children with moderate PCM when compared with the PCM (?) group (P = 0.029; Fig. http://www.selleckchem.com/products/epacadostat-incb024360.html 3B). Consistent with the results obtained for the systemic levels of bicyclo-PGE2, COX-2 transcripts decreased progressively with increasing deposition of PfHz in monocytes (P = 0.026; Fig. 3C). Pairwise analyses demonstrated a significant decrease in the moderate (P = 0.039) and high (P = 0.010) PCM groups when compared with the PCM (?) group. Taken together, these results show that increasing deposition of PfHz in monocytes is associated with reduced systemic bicyclo-PGE2 production and leukocytic COX-2 gene expression. The primary objective of this study was to determine the relationship between the COX-2-PGE2 pathway, erythropoiesis, and naturally acquired monocytic PfHz. As such, we examined the COX-2-PGE2 pathway in a pediatric population living in a P. falciparum holoendemic region of western Kenya in which the primary manifestation of severe malaria is SMA [3, 4, 16]. To eliminate the potential influence of coinfection on the host-immune response, all coinfected children were excluded from the study. Results presented here demonstrate that systemic bicyclo-PGE2/creatinine and WBC COX-2 mRNA transcripts were significantly suppressed in children with SMA.